In general I believe there are many positive improvements in the WFA.
The U.S forces are decent apart from some balance issues and the war spoils system has massive potential to evolve into a great community based system.
However currently I am on a break from COH2 and may call it a day in the future, why?
I cannot tolerate the OKW to play as or against. I find the faction encourages boring, static, campy play and it is all down to the truck system.
I have despised the trucks since the private alpha way back and made it very clear I disliked them immensely.
IMO they break dynamic front lines (medic truck), reduce tactical play by denying control points with very little player input or effort.
COH2 was the first RTS game I've played online and I've stuck with it through some very rough times (original tiger ace, no dmg cons, insane pio spam)
I cannot see Relic changing the trucks core mechanics.